# RST 599TK vs SHEETEST

The clearest difference is update cadence: SHEETEST at every 5 days against RST 599TK's every 6 weeks. RST 599TK's advantage is iOS requirement (15.0 vs 17). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

RST 599TK ships an update every 6 weeks, SHEETEST every 5 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | RST 599TK | SHEETEST |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (9 ratings)](https://appshunter.io/ios/app/rst-599tk/id1510750204/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 6 weeks | **Every 5 days** |
| Monetization | Ad-supported | — |
| Size | 36 MB | 4 MB |
| Requires iOS | **15.0** | 17 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [koji kamogawa](https://appshunter.io/developer/1488210713) | [Saya Tachikawa](https://appshunter.io/developer/6794575661) |

## What reviewers say

### RST 599TK

[App page](https://appshunter.io/ios/app/rst-599tk/id1510750204)

This application simulates Morse code communication for amateur radio operators. It supports various QSO styles, Morse code input via a touch keyer, and includes a CW decoder. Features allow for speed control, status display, and shortcut keys for common phrases.

**Highlights:** CW QSO simulation, Electric Touch Keyer input, Contest style QSO support, CW Speed Control, Min-in CW Decoder, Shortcut keys for CQ and TU

**In-app purchases:** none


### SHEETEST

[App page](https://appshunter.io/ios/app/sheetest/id6794575659)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is RST 599TK free?

RST 599TK is free to download, with no in-app purchases.

### Is SHEETEST free?

SHEETEST is free to download, with no in-app purchases.

### Do RST 599TK or SHEETEST have ads?

Both RST 599TK and SHEETEST show ads.

### Which is updated more often, RST 599TK or SHEETEST?

RST 599TK ships an update every 6 weeks, and SHEETEST every 5 days. Most recently, RST 599TK was updated on November 3, 2026 and SHEETEST on October 31, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*